COLUMBUS, Ohio (AP) — An Indiana Guardsman has pleaded guilty to having homemade explosive devices in his vehicle when he was stopped in Ohio.

Andrew Boguslawski (boh-guhs-LAW’-skee) faces 10 years in prison after pleading guilty Tuesday to having nine unregistered bombs found in his vehicle and four devices that could be converted into bombs. He also admitted having 20 explosive devices or components at his Indiana home.

Boguslawski entered his plea before a federal magistrate in Columbus during an hourlong hearing.

His attorney has said Boguslawski had the illegal devices but planned to use them for legitimate training purposes.

An Ohio trooper stopped Boguslawski on Jan. 1 for speeding on Interstate 70 west of Columbus.